The influence of pH on organovermiculite structure stability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F14%3A86092429" target="_blank" >RIV/61989100:27640/14:86092429 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0169131714000866" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0169131714000866</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.clay.2014.03.008" target="_blank" >10.1016/j.clay.2014.03.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of pH on organovermiculite structure stability

Popis výsledku v původním jazyce

There is a large amount of research and application studies in the topic of organically modified vermiculites and their properties. In this work, the stability of two organovermiculites, one modified with hexadecyltrimethylammonium (HDTMA(+)) and the other modified with hexadecylpyridinium (HDP+) ions, was investigated at pH values from 1 to 14 at laboratory temperature. The organovermiculites in the pH range of 4-10 were stable. In addition, the HDTMA(+)-vermiculite was stable in strong alkaline mediaand under extreme acidic conditions as well. However, HDP+-vermiculite underwent significant decomposition when exposed to strong acidic or alkaline conditions (pH 1,2 and 12,14). The prepared and tested materials were investigated using X-ray diffraction (XRD) method, Fourier transform infrared (FTIR) spectrometry, total organic carbon content (TOC), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The leaching of structural cations was determined as well.

Název v anglickém jazyce

The influence of pH on organovermiculite structure stability

Popis výsledku anglicky

There is a large amount of research and application studies in the topic of organically modified vermiculites and their properties. In this work, the stability of two organovermiculites, one modified with hexadecyltrimethylammonium (HDTMA(+)) and the other modified with hexadecylpyridinium (HDP+) ions, was investigated at pH values from 1 to 14 at laboratory temperature. The organovermiculites in the pH range of 4-10 were stable. In addition, the HDTMA(+)-vermiculite was stable in strong alkaline mediaand under extreme acidic conditions as well. However, HDP+-vermiculite underwent significant decomposition when exposed to strong acidic or alkaline conditions (pH 1,2 and 12,14). The prepared and tested materials were investigated using X-ray diffraction (XRD) method, Fourier transform infrared (FTIR) spectrometry, total organic carbon content (TOC), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The leaching of structural cations was determined as well.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Clay Science

ISSN

0169-1317

e-ISSN

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Svazek periodika

93-94

Číslo periodika v rámci svazku

květen 2014

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

17-22

Kód UT WoS článku

000335618100004

EID výsledku v databázi Scopus

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